Class: LibSL::LLPacketNumber

Inherits:
Object
  • Object
show all
Defined in:
lib/types.rb

Instance Attribute Summary collapse

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(number) ⇒ LLPacketNumber 



33
34
35
36
37
38
39
40
41
42
43
44
 
# File 'lib/types.rb', line 33

def initialize(number)
  @number = number
  if @number < 0xff then
    @frequency = :high
  elsif @number < 0xffff then
    @frequency = :medium
  elsif @number < 0xfffffffa then
    @frequency = :low
  else
    @frequency = :fixed
  end
end

Instance Attribute Details

#frequency ⇒ Object

Returns the value of attribute frequency.



32
33
34
 
# File 'lib/types.rb', line 32

def frequency
  @frequency
end

#number ⇒ Object

Returns the value of attribute number.



32
33
34
 
# File 'lib/types.rb', line 32

def number
  @number
end

Class Method Details

.decode(data) ⇒ Object 



4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
 
# File 'lib/types.rb', line 4

def self.decode(data)
  data = data.unpack('C1a*')
  num = data.shift()
  unless num < 0xff then
    data = data[0].unpack('C1a*')
    num = (num << 8) + data.shift()
  end
  unless num < 0xffff then
    data = data[0].unpack('C2a*')
    num = (num << 16) + (data.shift() << 8) + data.shift()
  end
  if [*data].length > 0 then
    data = data[0]
  else
    data = nil
  end
  return self.new(num), data
end

Instance Method Details

#encode ⇒ Object 



23
24
25
26
27
28
29
30
 
# File 'lib/types.rb', line 23

def encode()
  case @frequency
  when :high then data = [@number].pack('C')
  when :medium then data = [@number].pack('n')
  else data = [@number].pack('N')
  end
  return data
end